墨尔本PTE 阅读排序 2952

A. Plant breeders and farmers will draw upon this diversity to help crops keep pace with a warmer climate and ever-evolving pests and diseases.   

B. This is a seed collection, but more importantly it is a collection of the traits found within the seeds: the genes that give one variety resistance to a particular pest and another variety tolerance for hot, dry weather.   

C. A quiet rescue mission is under way.   

D. Virtually everything, every trait we might want our crops to have in the future, can be found in this genetic diversity.   

E. With growing evidence that unchecked climate change will seriously undermine food production and threaten the diversity of crops around the world, the Svalbard Global Seed Vault (right) represents a major step towards ensuring the preservation of hundreds of thousands of crop varieties.